Loom.



No. 663,357. Patented Dec. 4, |900. C. N. NEWCOMB.

LOOM.

(Application filed Mar. 24, 1900.)

(No Model.) sheets-sheet l.

Zzgl' 9 l Il l No. 663,357 `Patented Dec. 4, |900. C. N.'NEWCOMB.

LOOM.

(Application Bled Mar. 24, 1900.) (No Model.) 3 sheetsesheet 2.

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c. N. Newcom.

LOOM.

Lilli Il wire CHARLES N. NEWOOMB, OF DAVENPORT, IOWA.

LOOM.

SPECIFICATION forming part of Letters Patent No. 663,357, dated December 4, 1900.

Application led March 24, 1900. Serial No. 10,019. (No model.)

To a/ZZ whom, t may concern:

Beit known that LCHARLns N. NnwooMB,a citizen of the United States,residing at Davenport, in the county of Scott and State of Iowa, have invented a new and useful Loom, of which the following is a specification.

My invention relates to looms, and more particularly to the mechanism for operating the harness of the same; and it has for its object to provide mechanism of this class which will be simple and effective and can'he varied or changed very easily for the purpose of changing the style of the weaving by varying the movement of the harness.

With this object in View my invention consists in the improved construction and novel arrangement of parts of a harness-operating mechanism, as will be hereinafter more particularly set forth.

In the accompanying drawings, in which the same reference-numerals indicate corresponding parts in each of the Views in which they occur, Figure 1 is an elevation of my improved harness-operating mechanism, together with so much of a loom as is necessary to show its connection therewith. Fig. 2 is a vertical sectional View of the same. Fig. 3 is a top plan view. Figs. 4 and 5 are detail views of parts of the cam shaftoperating mechanism. Figs. 6, 7, 8, 9, and 10 are detail views of the cams. Fig. 11 is an elevation of the harness-frame mechanism, showing one of the cams in one position in full lines and in another position in dotted lines. Fig. 12 is an end view of a slide with which the cams engage. Fig. 13 is a plan view of one of the brackets by means of which the frames are guided in theirvertical movement. Fig. 14 is a perspective detail view of portions of the stirrup, the trigger, and trigger-fork, and Fig. 15 is an elevation of the star-wheel and bar.

In practicing my invention I provide a harness-operating mechanism which is adapted to be applied to the ordinary loom in such manner that the parts can be easily replaced or repaired if broken or disarranged and by means of which the means for varying the movement of the harness-frames can be easily and quickly changed without requiring the need or assistance of a skilled mechanic or expert weaver.

Although my invention is applicable to looms in which the harness-frames are supported so as to be moved vertically in any suitable manner, yet I have shown the frames 1 each provided with a substantially rectangular metallic frame 2, which fits in slots or notches 3 in substantially L-shaped brackets 4,which are secured to upright pieces or strips 5, which are in turn secu red tothe gear-rails 6. The upper cross-piece of each of said iron frames is provided with a slide 7, which projects downwardly therefrom and has its lower surface provided with a longitudinally V- shaped groove 8, with which the cams engage for moving the frames vertically.

The mechanism for moving the frames an at the same time operating the trigger 9 so as to cause it to engage with the stirrup 10 consists of a shaft 11, which is journaled transversely across the gear-rails 6 substantially midway between the sides of the frame 2. One end of the shaft projects beyond its bearings and is preferably formed angular in cross-section-as, for instance, by providing it with an edge or angular projection 12, which extends parallel with the axis of the shaft. The length of the projection is sufficient for the reception of the cams 13, which engage with the slides 7 and operate the harness-frame. These cams may be of any suitable shape, as shown at 14, 15, 16, and 17, and one or more of them may be used separately or in conjunction with the others or duplicates of the same form maybe used at the same time. The edge of each cam is sharpened or made V-shaped in cross-section to correspond with the V-shaped groove in the slide 7. l it is secured to the shaft is provided with a hole or opening 18 to correspond with the cross-section of the shaft 11. By constructing the shaft and cam in this manner it will be evident that by reversing the cam or turning it over its position will be varied one-quarter of a revolution relative to the shaft-as, for instance, if either of the forms shown at 14 and 15 were reversed they would stand at right angles to the position which they occupied be- The hub or portion of the cam Where IOO , moved in the opposite direction by the enfore reversal. The cams are held upon the shaft by means of a washer 19 and a screw 20.

The shaft ll is rotated by means of the ordinary star-wheel 2l, which is mounted between the rails 6, and a vertically-movable bar 22 is held in engagement with the star-wheel by means of the plate 23 and has its lower end connected with the slide-bar 24, which moves it up and down as the lay is moved'back and forth,the bar being connected to the lay-sword 33 bythe brackets or arms 84 in the usual-- manner. The intermediate portion of the rack-bar is provided with a perforation 25, into which one of the cogs or projections 26 on the star-wheel projects and by means of which the Wheel is turned one-quarter of a revolution whenever the rack-bar is moved vertically by the slide-bar. The upper portion of the inner face of the bar above the perforation is inclined or wedge-shaped, as shown at 27, which will engage with the cog of the star-wheel and crowd it over to complete the rotation of the wheel as the rack-bar is moved downward, thereby causing the succeeding tooth to enter the perforation in the bar in position to be carried forward hy the succeeding upward movement of the bar. By arranging the cams upon the outer end of the shaft of the star-wheel in the desired position to move the harness-frames at over one-quarter revolution of the shaft it is evident that whenever the shuttle has been thrown and the lay is moved forward to beat up the Warp the cam-shaftwill be rotated and the harnessframe moved into the desired position for the succeeding throw of the shuttle,

' In order to throw the shuttle in alternate directions from end to end of the lay, it is necessary to provide some means for changing the position of the trigger 9 in relation to the stirrup 10, so as to cause the picker-sticks at the opposite ends of the lay to be alternately operated to throw the shuttle back and forth. I accomplish this object by providing the end of the cam-shaft 1l with a wiping-cam 28, the arms of which extend in opposite directions and alternately engage with the upper end of the trigger-fork 29, and a substantially L shaped angle-bar 30, which is pivotally secured to one side of the gear-rail between the arms of the fork. One end of the angle-bar is located in such a position that when the opposite end is forced downward the trigger-fork over as far asit will go and carry the trigger 9 to the highest point of the stirrup l0; but when the trigger-fork is gagement of the arm of the cam-shaft inits further rotation the trigger-fork will force said end of the anglehar back into its original position and carry the opposite end upward into position to be engaged by the succeeding arm of the wiping-cam, as shown in dotted lines in Fig. l. The ends of the fork is supported at one'side of the gear-rail by brackets 32. The end of the fork that is engaged by the wiping-cam and also the arm of the angle-bar that is engaged by the cam are preferably slightly curved to assist in the easy movement and operation of the cam in its engagement with said parts.

As above described, it will be seen that all that is necessary to change the style of the article being woven is to change the location -cr position of the cams upon the cam-shaft, which can be done by simply removing the screw and washer at the end of the shaft and rearranging the cams to suit the style to be woven. For every time that the lay is operated the star-wheel will be given one-quarter of a turn, which will simultaneously change the position of the harness-frames and also shift the trigger from one portion of the stirrup to the other, whereby the shed will be changed and the shuttle thrown to produce the desired result. For instance, if the cams be of the form shown at Fig. 7 and arranged consecutively upon the shaft only one of the harnessframes will be raised for each throw of the shuttle and would remain down during three throws, or, in weavers terms, the frame would stay up for one pick, while if the form of cam shown in Fig. 9 be used the frame would stay up for two picks; but with the form shown in Fig. l0 the frame would stay up for three picks. With the form of cam shown in Fig. 8 the frame would stay up one pick and down one pick, then up one pick and down one pick, making a total of four picks or one revolution of the shaft. If it be desired to change or vary the style of weave, any one or all of the cams may be reversed, so as to change their position relatively to each other, and thereby vary the vertical movement of the harness-frames. In this manner the capacity of the loom for weaving dierent styles of goods is increased without the addition of eX- tra parts and by means of cams, which can be manufactured very cheaply and secured in position by any one without any particular mechanical knowledge.

Although I have shown what I consider to be the most desirable form of constructing my improved harness-operating mechanism, yet I reserve to myself all right to make such changes and alterations therein as will come within the scope of my invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, isu

l. In a loom, the combination, with two parallel gear-rails, of a shaft journaled thereon, each end of which projects beyond the rails, interchangeable cams on one end of the shaft, a wiper-arm on the other end and a star-wheel on the intermediateportion between the rails, frames in position to be engaged by the cams, a laterally-movable fork in position to be engaged by the arm and a reciprocatory bar in are rigidly secured to the sliding bar 3l,which position to engage the star-wheel and inter- IOO IOS

IIO

'mittentiy rotate the streiftA to operate the of the bar above the perforation being in frames and fork, substantially as described. elined or Wedge-Shaped, and means for movto 2. In a loom, the combination, With a shaft, ing the rack-bar, substantially as described.

one end of which is provided with interohan Ue- 5 able cams and the intermediate portion is po- CHARLES KN NEWCOMB vided with a star-Wheel, of a perforated ver- Witnesses: tioaliy-movabie bar in position to engage With FREDERICK HEINZ,

the star-Wheel, the portion of the inner face LEWIS M. FISHER. 

